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Posted to dev@lucene.apache.org by "colby (JIRA)" <ji...@apache.org> on 2011/02/10 15:23:57 UTC

[jira] Created: (SOLR-2356) indexing using DataImportHandler does not use entire CPU capacities

indexing using DataImportHandler does not use entire CPU capacities
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                 Key: SOLR-2356
                 URL: https://issues.apache.org/jira/browse/SOLR-2356
             Project: Solr
          Issue Type: Improvement
          Components: update
    Affects Versions: 4.0
         Environment: intel xeon processor (4 cores), Debian Linux Lenny, OpenJDK 64bits server v1.6.0
            Reporter: colby
            Priority: Minor


When I use a DataImportHandler to index a large number of documents (~35M), cpu usage doesn't go over than 100% cpu (i.e. just one core).
When I configure 4 threads for the <entity> tag, the cpu usage is splitted to 25% per core but never use 400% of cpu (i.e 100% of the 4 cores)

I use solr embedded with jetty server.
Is there a way to tune this feature in order to use all cores and improve indexing performances ?
Because for the moment, an extra script (PHP) gives better indexing performances than DIH.

thanks


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